MPC885 datasheet(17/92 Pages) FREESCALE

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MPC885/MPC880 Hardware Specifications, Rev. 3

Freescale Semiconductor

Bus Signal Timing

CLKOUT to A(0:31), BADDR(28:30),

RD/WR, BURST, D(0:31) output hold

(MIN = 0.25

× B1)

7.60

—

6.30

—

3.80

—

3.13

—

B7a

CLKOUT to TSIZ(0:1), REG, RSV, BDIP,

PTR output hold (MIN = 0.25

× B1)

7.60

—

6.30

—

3.80

—

3.13

—

B7b

CLKOUT to BR, BG, FRZ, VFLS(0:1),

VF(0:2) IWP(0:2), LWP(0:1), STS output

hold (MIN = 0.25

× B1)

7.60

—

6.30

—

3.80

—

3.13

—

CLKOUT to A(0:31), BADDR(28:30)

RD/WR, BURST, D(0:31) valid

(MAX = 0.25

× B1 + 6.3)

—13.80

—12.50

—10.00

—

9.43

B8a

CLKOUT to TSIZ(0:1), REG, RSV, AT(0:3)

BDIP, PTR valid (MAX = 0.25

× B1 + 6.3)

—13.80

—12.50

—10.00

—

9.43

B8b

CLKOUT to BR, BG, VFLS(0:1), VF(0:2),

IWP(0:2), FRZ, LWP(0:1), STS valid 4

(MAX = 0.25

× B1 + 6.3)

—13.80

—12.50

—10.00

—

9.43

CLKOUT to A(0:31), BADDR(28:30),

RD/WR, BURST, D(0:31), TSIZ(0:1), REG,

RSV, AT(0:3), PTR High-Z

(MAX = 0.25

× B1 + 6.3)

7.60

13.80

6.30

12.50

3.80

10.00

3.13

9.43

B11

CLKOUT to TS, BB assertion

(MAX = 0.25

× B1 + 6.0)

7.60

13.60

6.30

12.30

3.80

9.80

3.13

9.13

B11a

CLKOUT to TA, BI assertion (when driven

by the memory controller or PCMCIA

interface) (MAX = 0.00

× B1 + 9.30 1)

2.50

9.30

2.50

9.30

2.50

9.30

2.50

9.30

B12

CLKOUT to TS, BB negation

(MAX = 0.25

× B1 + 4.8)

7.60

12.30

6.30

11.00

3.80

8.50

3.13

7.92

B12a

CLKOUT to TA, BI negation (when driven

by the memory controller or PCMCIA

interface) (MAX = 0.00

× B1 + 9.00)

2.50

9.00

2.50

9.00

2.50

9.00

2.5

9.00

B13

CLKOUT to TS, BB High-Z

(MIN = 0.25

× B1)

7.60

21.60

6.30

20.30

3.80

14.00

3.13

12.93

B13a

CLKOUT to TA, BI High-Z (when driven by

the memory controller or PCMCIA

interface) (MIN = 0.00

× B1 + 2.5)

2.50

15.00

2.50

15.00

2.50

15.00

2.5

15.00

B14

CLKOUT to TEA assertion

(MAX = 0.00

× B1 + 9.00)

2.50

9.00

2.50

9.00

2.50

9.00

2.50

9.00

B15

CLKOUT to TEA High-Z (MIN = 0.00

× B1

+ 2.50)

2.50

15.00

2.50

15.00

2.50

15.00

2.50

15.00

B16

TA, BI valid to CLKOUT (setup time)

(MIN = 0.00

× B1 + 6.00)

6.00

—

6.00

—

6.00

—

Table 9. Bus Operation Timings (continued)

Num

Characteristic

33 MHz

40 MHz

66 MHz

80 MHz

Unit

Min

Max

Min

Max

Min

Max

Min

Max

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